Dispensing pump



March 12, 1929. w. c. ARMISTEAD U 3 .1

' DISPENSING PUMP Filed Jan. 26, 1925 3 Sheets$heet 1 IN VBV TOR.

I/ arku ia/ ead. BY

A TTORNE Y.

March 1929- w. c. ARMISTEAD 1,705,105

DISPENSING PUMP Filed Jan. 26, 1925 3 Sheets-Sheet 2 INVENTOR. W flrluz a/ d ATTORNEY.

DI SPENS I NG PUMP Filed Jan. 26, 1925 3 Shoots-Sheet. 3

INVENTOR. flmml-md BY 8% Z1, )M

A TTORNE Y.

Patented Mar. 12, 1929.

UNITED STATES PATENT OFFICE.

WILLIAM C. ARMISTEAD, OF LA CROSSE, WISCONSIN, ASSIGNOR TO S. F. BOWSER & COMPANY, OF FORT WAYNE, INDIANA, A CORPORATION.

DISPENSING PUMP.

Application filed January 26, 1925. Serial No. 4,652.

The invention relates to liquid dispensing pumps wherein the liquid is pumped into a receptacle from which it discharges by gravity in predetermined measured quantities.

An object of the invention is to provide a simple compact and eflicient mechanism by which oil and other liquids may be dispensed in measured quantities.

Another object is to provide a pump mechanism with a novel discharge means by which liquid may be dispensed in predetermined quantities.

Another object is to prov'de a novel form of measuring receptacle of the isible type and novel means for mounting the same.

Other objects and advantages will appear hereinafter.

The invention consists in certain novel features of construction, combination and arrangement of parts hereinafter described and illustrated in the accompanying drawings in which Figure 1 is a vertical sectional view of the measuring receptacle or bowl, taken on the line 11 of Fig. 6; Fig. 2 an elevational view partly in section of the discharge mechanism, the sectional portion being taken on line 2---2 of Fig. (3; Fig. 3 a vertical sectional view of the discharge outlet and tube takczs on line 3 3 ot Fig. (3; Fig. 4- a plan view ot' the sliding discharge tube and one ot' the stops; Fig. 5 a bottom plan view of the top of the measuring reccpiuclc; Fig. 6 a top plan view of the base of the measuring ccptacle showing a modified mechan sm tor carrying the indicating pointers, the latt r being at right angles to those shown Iii Figure 1; Fig. 7 a central cross-sect on ot the base and Fig. 8 a perspective view ot the indicator carrying mechanism.

In the illustrative embodiment of the in vention the parts shown in Figs. 1 and 2 constitute a vertically disposed unit, the parts in Fig. 2 being enclosed a suitable case, not shown, having doors at desirable points to attord access to the parts.

1 is the supply or till pipe Wltlt'll leads from a suitable storage tank or trom a pump connected to the tank and is connected at its upper end to a conduit or passageway 2 that is attached by a connection 3 to the base 4 of the measuring receptacle, at an opening 5 in said base. A pipe 6 is also threaded in said opening 5 and extends upwardly within the measuring receptacle.

An annular flange 7 projects upwardly from the base adjacent its outer edge and a glass cylinder 8 is engaged on the base within the flange, a fluid tight joint between the cylinder and the base and the flange being formed by suitable means, such as litharge, 8

A conduit 9 extends upwardly from the ground and is connected at its upper end to the casting which forms the conduit or passageway 2, a second conduit 10 being connected to the casting above and in alinement with the conduit 9 and being extended through the connection 3 and through the extension 6 of the till pipe. The conduit 10 projects from the upper end or" the pipe (3 and is exteriorly threaded. The conduits 9 and 10 contain the wires 11 by which elec tric currentis supplied to illuminate the lamps mounted in the sockets 12.

A cap ring 13 rests upon the upper edge of the cylinder 8, the upper end of the cylinder being received in a channel let formed in the cap by the annular flanges 15 and 16. Suitable means 17, such as cork or litharge is disposed between the end of the cylinder and the cap ring. A rib 18 extends centrally across the ring and is in engagement with the conduit 10, and a nut 1e on the conduit when tightened on the rib lo secures the ring in position after the ring is tightened on the cylinder. The open spaces 13 on opposite sides of the rib atl'ord access to the interior of the receptacle without removing the cap ring.

A cup-shaped cover 19 is threaded on the conduit 10 and is positioned thereon so that its rim lies in a plane below the horizontal plane of the upper edge of the supply pipe G. Then liquid is pumped through the supply pipe it discharges from the upper end of the pipe (3 and strikes the cover by which it is deflected downwardly into the receptacle.

Bearing against the top of the cover 19 and engaged on the conduit 10 is a. bar or plate 20 to the outer ends of which are sccured the rods 21. The lower ends ot' the rods are engaged in a plate 2t) loosely engaged on the till pipe 6 or said ends may engage sockets 22 formed in the base 4 (Fig.

lttt) Qal 6). These rods support pointers 21 by Which quantities of liquid are indicated in the receptacle, such as 1, 2}, 3 4 and gallons. A nut 23 on the conduit 10 holdsthe plate in position, and the nut lies below the n r bo s 0f the rib. .8.-

A plurality of grooves 24 formed in the bottom of the ring 13 (Fig. receive the upper ends oi? the U-shaped springmembers The lower ends of each member are engaged behind the lugs 2Q that proiect "train the upper side of the base Each member 25 is installed by engaging its upper closcel end in one ol the grooves 24 and then its lower ends are spread to pass beyond the lugs Upon releasing the said ends they spring into engagement with the lugs and they are. therefore rigidly supported between the cap ring and the base. These members support any suitable guard for protecting the glass cylinder but do, not tie the cap ring on the cylinder. The conduit ltl performs the tieing function alone.

The annular flange. 27 projects upwardly from the top side of the. cap ring, the flange being; inset at one. point to. term a passageway 28 for venting the. receptacle. A short pipe 29 is threaded in an opening formed in the cap ring at the passageway and forms a communication between the interior of the receptacle and the passageway 28, a suitable check valve. being mounted in the pipe to control the same.

A, canopy 30- is engaged on the flange 2 and firmly held in position by a nut 3L. Rotation of the canopyv is avoided by the engagement of a lag 32 in a recess formed in the bottom ot the canopy, the lug. being formed on the rib 18.

The service wires 11 are extended through a side wall o the canopy and are suitably connected to the lamp, sockets 12 that are supported, on said walk An, overflow pipe 34 is mounted in the base -land extends upwardly, within the receptacle. A, sleeve 35 is threaded on the upper end; of this pipe by which the etl'ectire hei ht of the pipe may be increased or decreased in order to secure an accurate measurement of the maximum amount of liquid the, receptacle shall contain. At its lower end the pipe 34 communicates with a passageway 36, (Fig. 6;), formed in the base 4 and a conduit 37 also. communicates with this passageway and leads to the main reservoir or storage tank from which liquid is pumped.

When liquid is pumped into the receptacle through the fill pipe 6; it will rise therein until it reaches the upper rim of the adjustable sleeve on the Overflow pipe. usually passes above said rim and alter the pump ceases operating. it overflows through the pipe 34 back to the storage tank until it reaches the level.determined by the sleeve This level indcatcs a predetermined quantity of liquid in the receptacle, or bowl as it is commonly designated.

At a suitable point in the conduit 37 there is attached a connection 35% which communicatcs with a chamber 39 formed in the east- 40. A port ll in a wall of the :asting forms a connnunitation between the chamber and a passageway 4-2 in the casting. A valve 43 normally closes this port under the influence of a spring 44, and its stem 45 projects through a suitable stuiiing be 46 to the exterior of the eating for manipulation to unseat the valve when desired. The misting -10 is suitably removably attached to a hollow casting ll, and the passageway 42 communicates with the interior oi the casting l7. A vertical pipe 48 is connected at its lower end to the casting l? and its upper end connected to. casting d2) secured to and depending; from the base 4: and having a discharge conduit 50 with which a pipe 51 connuu iicatts, a suitable discharge means such as a hose being attached to the pipe. A controlling valve 51 is installed in the pipe 5t. A port 52 in the base t terms a conunuaiication between the casting 49 and the interior of the receptacle. A, vent pipe 53' (Fig. 3)! is also connected to the casting 49 and extends up through the port. 52, toward the upper end. of the receptacle.

A tube 54; is longitudinally slidably mounted in the casting} l7. and is extended up through. the. pipe 28 and the casting M, a stufling box 55 being provided in the latter casting to prevent leakage liquid around the tube. The tube is less in dian'ictor than the pipe 4&8 hence a passageway or well 56 is formed by the pipe and the casting 4:7 with which the tube has cou'ununication by the ports 57 formed in the wall of the tube. A stutliug box is provided in the casting t? tor the tube or a member connectrd to the lower end of the tube.

A. hamllefitlv (F g. l) is suita ly connected to the tube 54 by which the tube may. be raised or lowered by hand. A tixed guide rod 59 slidahly embraced by the handle prevents rotation oi the tube. A lug (it) project's laterally from the handle and is adapted to abut any one of the quantity stops 61 when placed in its path. The tube is of such length that it may be elevated into the bowl to drain out liquid therefrom down to any level between the upper end of the overflow pipe and the bottom of the res ceptacle.

The stops are mounted on a rod 62; iixed to the casting, 47' and. to, the foot (.33, the guide rod 59 being secured tothe same casting-and foot. Each stop compuiscs a sleeve (i l having a laterally projecting lug (34, preferably its upper end, upon one taco of which is formed or. placed; a number indicating quantity. A lug, 66 projects from the loo ill)

opposite side of the sleeve at a proper angle and carries a screw member 67 that is vertically adjustable on the lug. The screw member is so adjusted that when the handle abuts the upper end of the screw member the upper end of the tube will be at the correct level in the bowl to cause the selected quantity of liquid to discharge from the bowl. In the present illustration the stops are numbered from 1 to 5, representing gallons, the uppermost stop being numbered 1. In Fig. 2 the second stop has been operated and the handle engages the screw member on the stop; hence two gallons of liquid will flow from the bowl through the tube into the annular space or well 56 and out through the discharge 51.

Each stop is separated, from its neighbor by a flat washer 68, and a rod (39 secured to the casting 47 and to the foot 63 is passed through each of the washers to prevent its rotation when a stop is turned. Hence when one of the stops is turned or set in operating position the other stops are undisturbed.

In operation the discharge tube is raised to its highest point; that is; slightly below the upper end of the overflow pipe 3%, and the liquid to be dispensed is forced by the pump, or such other source of power as may be used, from the storage tank through the fill pipes 1 and 6 into the measuring receptacle or bowl. The selected stop is then rotated or turned to cause its lug 66 to move into the path of the lug on the handle and the tube is then lowered until the lug (30 abuts the bolt on the lug 6G. The valve in the discharge pipe is then opened and the liquid discharges through the sliding tube, the annular cavity or well and the discharge pipe to the desired point. lVhen the love]. of the liquid in the receptacle talls to the top of the sliding tube the flow oi" the liquid from the receptacles ceases and the quantity of liquid that has passed into the discharge pipe and received by the customer is the quantity indicated by the selected stop. The liquid in the cavity 56 of the casting if) is discharged at each discharging operation of the mechanism, and hence is part of that received by the customer or operator. In order that this cavity shall be filled upon each refilling operation, the pipe 53 vents the cavity thereby avoiding all air binding of the same and assures the delivery of the predetermined quantity of liquid at each operation of the mechanism. The several parts are of course properly proportioned and adjusted so that an accurate measure of liquid is assured. The operations are repeated as ol'tcn as liquid is desired. After the first operation of the pump in the day it is not essential to drain the measuring receptacle if the contents are not all dispensed at that operation, but fire regulations may require such drainage. The surplus liquid in the receptable, in the discharge tube and in the annular cavity and the passageway may be drained out by opening the valve 43. The liquid then flows through the port 41 into the cavity 59 and into the return pipe 37 by which it is conducted back to the storage tank. Doors are provided on the casing .which encloses the operating parts of the mechanism so that unauthorized access to the parts may be prevented and one of these doors could be opcratively connected to the stem of the drain valve 43 by which the closing of the door will cause the drain valve to open. This is general practice now and I do not illustrate it.

\Vhat I claim is:

I. In a liquid dispensing mechanism, the combination oi a base, a transparent cylindcr on the base, a fill pipe within the cylinder and extending upwardly from the base, a conduit extending through the fill pipe, an apertured cap clamped on the upper end to pro\ ide access to the interior of the cylinder, a canopy, and movable means on the conduit to clamp the canopy pan the top side of the cap for clo;-;ing the apertures in the cap.

2. In a liquid dispensing mechanism, the combination ot a base, a transparent cylinder on the base, a fill pipe within the cylinder and secured in an opening in the base, a conduit extending upwardly through the said opening and through the fill pipe, a guard mounted on the conduit and overhanging the upper end of the fill pipe and adapted to direct liquid flowing from the fill pipe in an outward and downward direction, an apertured cap on the conduit and secured upon the upper end of the cylinder and adapted to atlord access to the interior of the cylinder, the cap also having a passageway therein communicating with the interior oi the cylinder and with the atmosphere, a valve to control the said passageway, a canopy rciiiovably covering tho up and means on the conduit to clamp the canopy on the cap.

Ii. In a liquid dir-qiensii'ig mechanism the combination of a base, a. transparent cylindcr on the basc, a crics ol' lugs on thc base oxteriorly oi' the cylinder, :1 cap removably clamped upon the upper end of the cylinder and having a series of grooves formed in its lower face and exteriorly of the cylinder and a plurality of U-shaped members engaged in the grooves respectively, their lower ends having resilient engagement with the lugs.

4. In a liquid dispensing mechanism, the combination of a base, a transparent cylin der on the base, a support within the cylinder and extcudin upwardly from the base, an apertured memlocr on the support and cin gaging the upper end of the cylinder, means to lock the said member on the cylinder, a canopy to close the apertured member and rcmo *able means on the support to clamp lll) the canopy in engagement with the apertured member.

5. In a liquid dispensing mechanism, the combination of a base, a transparent cylinder on the base, a support Within the cylinder and projecting upwardly from the base, a member engaging the upper end of the cylinder and having annular grooves in itslower side exteriorly of the cylinder, means on the support to lock the member on the 10 cylinder, and resilient members removably engaged in the grooves and engaging the base.

In Witness whereof I have hereunto subscribed my name this 16th day of January, 15 1925.

WILLIAM C. ARMISTEAD. 

